Danfoss VLT Micro Drive FC 51 Operating Manual page 25

VLT® Micro Drive FC 51
Operating Guide
Number Description
51 AMA check U
nom
I
nom
52 AMA low I
nom
59 Current limit
63 Mechanical brake low
80 Drive initialized to de-
fault value
84 The connection be-
tween drive and LCP is
lost
85 Key disabled
86 Copy fail
87 LCP data invalid
88 LCP data not compati-
ble
89 Parameter read only
90 Parameter database
busy
91 Parameter value is not
valid in this mode
92 Parameter value ex-
ceeds the minimum/
maximum limits
nw run Not while running
Err. A wrong password was
entered
These faults are caused by mains distortions. Install a Danfoss line filter to rectify this problem.
1
Danfoss A/S © 2020.09
Warn- Alarm
ing
and X
X
X
X
X
Trip Er- Cause of problem
lock ror
Wrong setting for motor voltage and/or motor current.
The motor current is too low. Check the settings.
The drive overload.
Actual motor current has not exceeded the release
brake current within the start delay time window.
All parameter settings are initialized to default settings.
X No communication between LCP and drive.
X See parameter group 0-4* LCP.
X An error occurred while copying from drive to LCP, or
from LCP to drive.
X Occurs when copying from LCP if the LCP contains er-
roneous data - or if no data was uploaded to the LCP.
X Occurs when copying from LCP if data are moved be-
tween drives with major differences in software ver-
sions.
X Occurs when trying to write to a read-only parameter.
X LCP and RS485 connection are trying to update param-
eters simultaneously.
X Occurs when trying to write an illegal value to a param-
eter.
X Occurs when trying to set a value outside the range.
X Parameters can only be changed when the motor is
stopped.
X Occurs when using a wrong password for changing a
password-protected parameter.
Troubleshooting
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